Packet Garden, developed by Julian Oliver, captures information about how you use the internet and uses it to grow a private world you can later explore.

The (free) software keeps track of all the servers you visit, their geographical location and the kinds of data you access. Uploads make hills and downloads valleys, their location determined by numbers taken from internet address itself. The size of each hill or valley is based on how much data is sent or received. Plants are also grown for each protocol detected by the software; if you visit a website, an 'HTTP plant' is grown. If you share some files via eMule, a 'Peer to Peer plant' is grown, and so on.

None of this information is made public or shared in any way, it's your own private landscape.